Bitcoin transactions are slow, the fees are high (depends which time of the year it is

) they are many alternatives and yes its only a matter of time that bitcoin dominance would be replaced.
I think this is the leading mechanism now, days and bitcoin are in wide reach reaching the universe that provides countries with communication to the country through various transactions using bitocin and with the investment they use as well as bitcoin.
With the type of technology we have, and the system is far from obsolete but more profitable